Anti-side-draft plow



Oct. 21 1924. 1,512,535

P. HANSMANN ET AL ANT I'- 5 IDE DRAFT PLOW Filed Feb. 14. 1921 2 Sheets-Sheet 1 36 fiweizfwu, Paul fizz/2017mm:

54 as Herman Sfiwej Oct. 21 1924. L512,535

P. HANSMANN ET AL ANTI -SIDE-DRAFT PLOW Filed Feb. 14. 1921 2 sheets fiheefi 2 III 1,

Zenir @5 2 Patented Oct. 21, 1924c UNITED STATES TENT QFFICE.

PAUL HANSMANN AND STRAGK, T1 LONG PRAIRIE, MINNESC'IA, ASSIGNORS, BY MESNE ASSIGNMENTS, TO TI-IE UNIVERSAL TILLER CORE'ORATION, A CORPORA- TION OF DELAWARE.

ANTI-SIDE-DR-AFT FLOW.

Application filed February 14, 1921.

To all whom it only concern:

Be it known that we, PAUL HANSMANN and HERMAN STRACK, citizens of the United States, residing at Long Prairie, in the county of Todd and State of Minnesota,

have invented. certain new and useful. im-

provements in AntiSide-Draft Plows, of

which the following is a specification.

This invention relates to plow hitches for use in connection with, what are known, as garden tractors, of which the well known Beeman tractor is a type.

This tractor, in connection with which our invention is shown, comprises a power unit, supported by and operatively connected with a pair of traction wheels, and a rearwardly extending handle, for bodily swinging the traction wheels, (in the process of steering) around a pivot point located midway between them. This two wheel tractor, is usually provided with removable trailing casters for stabilizing the body of the tractor, the operator walking on the ground. and directing the tractor after the manner of a lawn mower. As these tractors are of narrow gauge, the body stands at a considerable angle, when one of the traction wheels is running in the furrow, in the process of plowing, resulting in undue side wear of the engine parts, strenuous efforts on the part of the operator in controlling the tractor, and not infrequently in tipping over.

The principal object of our invention is to provide a simple, compact and efi'ective plow hitch, which may be readily attached to the tractor, and whereby the traction wheels are enabled to travel on unplowed ground in the process of plowing, our improved hitch embodying certain novel features of construction, whereby a plow, hitched in offset operative position, relative to the center of draft of a tractor of the class described, will be effectively engaged by the stabilizing element of the tractor, to eliminate side draft at the land side of the plow. As is well known, side draft, or, in other words, lateral pressure of the plow against the wall of the furrow, is the result of the natural tendency of the plow to travel in a resultant direction toward the center of draft of the tractor, in its endeavor to align Serial No. 444,950.

itself longitudinally with its pivotal attachment to the tractor.

By adapting the usual stabilizing caster to perform this function, the general construction is greatly simplified and cheapened as to manufacture.

Other advantages of the invention will be pointed out as they appear in the course of the specification, one form of the invention consisting in the construction, combination and arrangement of parts hereinafter described and claimed.

In the accompanying drawings:

Figure 1 is a semi-diagrammatic top view of a Beeman tractor equipped with the invention, only the body and steering handle of the tractor being shown.

Figure 2 is a side view of same.

Figure 3 is a fragmentary perspective view of the draw head of our improved plow hitch, showing the method of attaching parts of the details.

Figure l, is a perspective view of the stabilizing caster wheel.

Figure 5 is a perspective View of the plow frame extension arm.

Figure 6 is a perspective view of the plow frame connection for connecting the plow to the tractor.

Figure 7 is a sectional view on line 77 of Figure 6.

Figure 8 is a top view of the vertically swingable interlocking member of the plow frame connection.

Figure 9 is a top view of a part of the plow frame connection interlocking with the part shown in Figure 8.

Figure 10 is av sectional view on line 1.0-10 of Figure 6.

Figure 11 is a semi-diagrammatic view of the invention and Figure 12 is a side view of the plow lifting handle.

In the drawings, A designates the frame of the tractor, B the axle and C and C the traction wheels driven by a power unit not shown. D designates the rearwardly extending steering handle having pivotal conhanole laterally, the body of the tractor will turn on the central pivot F, which. latter is situated at the intersection of the axis of the shaft and the longitudinal axis or tractor draft line Projecting rear- Wardly from the frame A, and coincident with the axis G-G, is the stub shaft H, "of uniform diameter, and adapted to su port the usual garden implements, including a plow.

Having shown the invention in connection ith a Beenisn tractor, we have utilized the stub shaft as a connecting means.

The invention comprises draw head I positioned in the tractor draft line, a ground element 5, and a plow I". The draw head comprises in part, a horizontally disposed channeled head 1, extending transversely of the tractor, the channel thereoi facing rearwardly, said head formed with a hub 2, suitably bored to i'einovabl fit over the stub shaft H, 3) said hub having suitable set screw fastening 3 whereby the h ad may be firml held positioned. The upper and lower flanges l and 5 of the head are provided with spaced bolt holes 6 in vertical register. The ground element J, which functions in part as a stabilizer caster for the tractor, comprises a rcarwardl extending tongue 7, pivoted to swing in a horizontal plane on the pivot bolt 8 in one of the holes 6, said tonjeue bei braced by the head,

brace member 9 bolted to the draw and having cap screw connection 9 with the sleeve 10, the latter shdabl'e on the tongue '7, and having suitable set screw tening 10 whereby to be firmly held positioned. Obviously, by sliding the sleeve along the tongue, the angular position of the latter i h respect to the head I may be cl'ianged when desired.

, t its free end, the tongue rotatablv supports the verti'ca'llj disposed shank ll of the fork 12, wiich latter rotatably supports the gr nd wheel 13 the periphery of the latter being: preferably t -shaped to out into thesoil. The inner side member i l: of the fork 12, is comparatively wide, and extends distance above and below the spindle of the wheel, so as to constitute a shield or pallet presenting a smooth outer surface. Extending}; upwardly and rearwardly from the top of the tongue 7, the plow sui J 16, formed With a conoaved seat 16 the pose of which will be hereinafter described.

The plow 141. comprises trains, consistiii-g ere beam 1'7, a sheth portion 18, and the share 19, the earn injg constructed at its forward end with a torwardlf facing shoultier 19' at right angles to the plow frame, said shoulder having bolted on its face connecting mechanism consisting of e. vertically swingable connecting member 20, pivoted. on the beam pivot bolt 21, the latter extending; through the plates 22 and 23, so as to hold said plates and connecting member posi lioned flatly against one another, as shown. The plate formed with on OlltStzllKl 111g .ierr-lly, the end 2-5 of the r-uuncctinp; incin- 20. Cent ally, the plate on has centrally bored boss 26, rotatable in the bore :17 of the connecting member 20. A suitable washer 28 overlaps the bore Eli. and series, when the bolt 21 is in position, to ltccp the c nnecliing member positioned llud'l against the plate :22. The under l ucc ill; of the connecting ineniber extends l 'u'ward l, to the bottom of the groove 30, the latter rece ving sliduhly, the forward end ill ol the plate 22.

Thus, the connecting u'iezul cr may or ro tated in e. plane parallel. with that ol the plow trains, the latter being: lirinlv boll'cd to the Jlate rotating: the connecting member 90, to position at right angles to the plnlc 22, said incznl'icr may he slipped (ill the boss fill, when the bolt is removed, the plzuc mid nicinicr being pivotallv interlocked, when their respective grooves ii-land 30 engage the ends and 30-.

Forward of the pivot 2]. the connecting; member pierced by the vertical bore 32. which letter slidabl l'tCtlYlYS the plow pivot pin 33., whcreon the plow may swing lzilcr all) said plow ])1.'Ol1 being ((llllllltl'lill\\l long lo pa i'niit the plow to l. c :ul'juslcd .Ll'llcell; i: furrows of varying; depths. 'llic cu plow pi ot pin is mounted in rolic Formed by a pair of \crl'icalh ali ijncd lugs l l' tending; reurwhrdly from the housing .l-t. llic housing-3; being formed near the top of the yoke and forward tlici'cof. with :1 lioi'izcim tally disposed. rccizuigulai long sleeve ii. said sleeve Sli(l:1lll rcccivins" the cross lmr Chi, the lnticr cxteuliugy zit rip-ill :mglr-s lo the trzlctor d' 'ni't line and being tirzol y liollcd lo the under surface oi the flange 5 of the draw head of which it forms a port. :1 suitable brace 21? for the bar being provided. "ilic iereb it is til-nil re gning.

if with its pivotal courie 6 designates a direction in which th the plow pivot is shown situated in lliis-i row, oesipinatcd by the line oi d. the ljii'nrliel relation relative the center all druxlt ol' .wmriflh :il. ll "ll :uic'l i directed surilnce of he shoulder 119 nl Hi" i .7 l the plow tends to lravc in loogii tudinal alumni ctor. the limo llci lizzl sullizili'ii line and at the some lime. have the forming: the sl'loulder 1. is provided, so that the plow, the latter being assumed to lie in plr. c at, is bent c bolted to the lorwzo-il end of the plow hean'r its stated in 1 tion with the In Figure s.

liloii rcn iii to tri'w'e'. ii

nne. To locate the plow pivot on said to tip o of the share out to the wall of the furthe plow connection may be mounted in oil' set the plane of the plow frame. It will be noted, that the line Z -Z intersects the pivot point A of the tractor and an assumed working center of the plow share, it having been found by trial with a Beeman tractor equipped with the invention, that, in operation the plow appears to work without any undue vibration or side tremor, and the tractor with less steering effort and very apparently with greater ease, as the plow pivot 33 is set nearer to the resultant line ,cZcZ. For the purpose of adjusting the plow laterally, the sleeve 35 may he slid on the bar 36, the top and bottom walls 37 and S8 of the interior of the sleeve diverging outwardly from a point midway between its ends, so that the bar may be held positioned at various angles by the set screws 89, as shown in dotted lines (Fig. 10) whereby the plow may be set to cut a level bottom in the furrow.

Firmly secured to sheth 18 of the plow I frame, and extending inwardly to a position adjacent the tractor draft line is the arm 4-0, formed, preferably, with a longitudinally disposed threaded stud 41 extending through the plow frame and having threaded engagement with suitable nuts (not shown) whereby it may be held positioned. Asuitable strut brace 42 extending to the plow frame is provided. Adjustable longitudinally on the arm 40, are the straps 43, each having a row of bolt holes at in vertical register, said holes also registering with holes cut vertically through said arm as indicated in dotted lines, whereby the straps may be bolted firmly in place. At their outer ends the straps rotatably support the anti-friction roller 45, as by means of the vertical spindle 46. In operation, (the plow being positioned as indicated in Fig. 1), the roller 45 is adjusted to contact with the shield 14 of the caster wheel, so as to hold the latter at an angle, as shown in Figure 11) to cause it to travel in the direction of line h-h toward the plow. In its endeavor to reassume its normal straight ahead course, a constant pressure is exerted against the roller 15, thereby effectively counteracting the side draft at the land side 7 of the plow share. Thus, the caster operates as aground ele ment the wheel 13 thereof bracing against the ground in opposition to a pivotal movement of the tractor around the pivot A, or around its tract-ion wheel C as a pivot.

Further, as the point of attachment 8 of the ground element to the draw head, is offset from the tractor draft line, in opposition to the plow pivot 33, the pull at 8 largely neutralizes the pull of the plow, especially, since the greater the angle of the line h7t, the greater the ground resistance to the dragging action at the periphery of the wheel 13. By adjusting the brace member 9, the ground element may be swung outwardly (dotted lines Fig. 11) to a position farther removed from the plow, whereby the resistance offered by the dragging action of the caster in opposition to the pull of the plow, 11121:, be materially increased.

Referring to Figure 5 of the drawings, the stud 4-1 is formed with a squared part 46, fitting the squared opening l? in the handle 48, the latter extending rearwardly from the plow frame, whereby the plow may be lifted to out of use position, to bring the arm 40 to rest on the seat 16 of the plow support 16, shown in dotted lines in Figure 2. li hen the plow is in inoperative position the ground element serves solely to stabilize the tractor, the caster, yielding to the turning movement of the latter.

w e claim:

1, A plow hitch for use in connection with a wheeled frame, a draw head adapted to be attached to the wheeled frame, a plow, the share thereof being spaced from the center of draft of the wheeled frame to plow outside the path of the latter, a rear ardly extending ground element attached to said draw head at a position spaced from the center of draft of the wheeled frame in a direction opposite to that of the plow, means for pivotally connecting the plow to said draw head, the ground engaging part of said ground element loosely contacting with said plow and having a ground cutting edge adapted to cut into the ground at such an an 'le as to be thereby forced in the direction of the plow in the process of plowing.

2. A plow hitch for use in connection with a wheeled frame, a draw head adapted to be attached to the wheeled frame, a plow. the share thereof spaced. from the center of draft of the wheeled frame to plow outside the path of the latter, a ground element attached to the draw head, said ground ele ment including a caster wheel positioned adjacent the landside of the plow, means for pivotally connecting the plow to said draw head, and adjusting means for the ground element whereby the latter may be set to hold said caster wheel against the plow at such an angle as to steer it toward the latter.

3. A plow hitch for use in connection with a wheeled frame, a draw head adapted to be connected to the wheeled frame, a plow pivotally connected to the draw head, the share of the plow being spaced from the center of draft of the wheeled frame so as to plow outside the path of the latter, and means attached to the draw head extending along the landside of the plow to a part of the latter to contact therewith and with the ground to frictionally engage same at such an angle as to effect a sidewise pressure against the plow in the process of plowing.

4;. A plow hitch, for use in connection with a wheeled frame, comprising a draw nection between the plow and said draw head to render the plow swingable lateral- 1y, said pivotal connection being located in laterally spaced relation to the landside of the plow and to the center of draft of the wheeled frame.

5. In a plow hitch, the combination with a tractor including a stabilizing trailing caster wheel, of a draw head on the tractor, a plow pivotally connected to said draw head, said plow being spaced from the cen ter of draft of the tractor so as to plow to the edge of the trail of the latter, and adjustable means between said caster wheel and plow operatively connected to both, whereby said caster wheel may be constant" ly held in selective positions concurrently with its stabilizing action upon the tractor,

to travel toward the plow to effect :1 constant pressure thereagainst in the process of plowing.

6. In a plow hitch, the combination with drawing means, of a plow offset from the center of draft of said drawing means. :1 trailing caster wheel laterally opposite the landside of the plow, and means operative from the plow to control the caster to effect a compensating bodily movement of the res-- terresponsiv'e to a landward movementof the plow.

7. In a plow hitch, the combination with drawing means, of a plow ofliset from the center of draft of said drawing means, a trailing ground element laterally opposite the landside of the plow, and means operative from the plow to cooperate with the ground element to effect a compensating bodily movement of the ground element responsive to a landward movement of the plow.

In testimony whereof we aflix our signatures.

PAUL HANSMANN. HERMAN STRACK. 

